What is Unit test, Integration Test, Smoke test and regression Test?

What is Unit test, Integration Test, Smoke test and regression Test?

What is unit testing?

It is a testing method where individual components or units of a software application are tested. Each unit of the software code needs to be validated and ensure that the code performs as expected.

A unit can be an object, module, procedure, method or individual function. It is performed during the coding phase of an application.

Advantages of Unit testing: •The code can be refactored by a programmer at a later date and ensures that the module works correctly •Parts of the project can be tested, without waiting for other parts to be completed •The codebase can be understood by developers and testers quickly, which in turn helps them to find defects faster

What is Integration testing?

Individual software modules work fine, but, when they are integrated with more modules chances are they might not work as expected.

This is where integration testing comes in and tests the integrated modules and thus makes sure that the software is running smoothly.

The data communication is checked amongst these modules. This testing method is performed after unit testing and before validation testing.

Advantages of Integration testing: •It makes sure that the integrated modules work as expected •Errors related to the interface between modules are detected •A large volume of the system is covered •The test coverage is increased and the reliability of tests is improved.

What is Smoke testing?

It is a testing method that is performed to ascertain whether a deployed software build is stable or not. QA team gets a confirmation that they can continue with further rounds of testing.

On each build, a minimal set of tests are run to test software functionalities. A build includes all engineered components, reusable modules, libraries, data files etc., that are required to implement one or more product functions. It is also known as “Build Verification Testing.”

Advantages of Smoke testing: •Defects are identified in the early stages of development •Crucial errors can be easily detected and corrected •Integration risks are minimized •The quality of the system is enhanced •It is easier to access software progress.

What is Regression testing?

It is a testing method that makes sure that the modifications and updates done to the code do not alter or modify the existing functionalities of the software application. These code changes could include updating a current feature, fixing bugs, adding new features etc. The existing functionalities are properly tested to make sure that the code changes have not altered the existing functionalities.

Already executed test cases that are partially or fully selected are re-executed to make sure that the existing functionalities are working just fine. It is a black-box testing technique. It is considered to be a crucial part of software maintenance.

Advantages of Regression testing: •The product’s quality is enhanced •The issues that have been fixed will not occur again •It mitigates risks during the testing process •It is easy to understand, analyze and learn.

Conclusion If you are looking forward to implementing unit testing, integration testing, smoke testing or regression testing for your specific project, then do get connected with a top-notch software testing services company that will provide your feasible testing strategies and professional support in line with your project specific requirements.